Improved post-auger



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JOIIN B. DRAPAR, or SALEM, ILLINOIS,

Letters Patent No. 83,611, dated November 3, 1868.

i mmaovEnPosT-AUGE The Schedule referred to :in these Lettera Patent and making part of the'same.

`vertical section.

Figure 2 is plan or top view of the stand, the langere.

- shaft and the two Operative wheels being removed.

The machine has a screw-shaft, armed with an auger and point at its lower end.y It rotates in a nut, set into the bridge-piecel of a portable stand, which is placed over the spot where the hole is to bev bored. The screwf` shaft is rotated by a wheel, to drive the auger into the' ground. The properdepth being reached, the nut is rotated by another wheel, which lifts the auger verti` cally, without rotating it, and withdraws the earth which rests upon the auger-blade'.

In the drawings, A are the sills, B the stand, and O the bridge-piece of the stand which supports the borer. D is a nut, securedby half plates, E, whose .semicircular abutting edges enter a groove in the nut, and allow it to rotate at proper times, without changing itsposition vertically. The upper portion of the nut is hexagonal, or presents facets, which enable the wheel F to set securely thereon, the wheel being the means for rotating the nut for the 'purpose of withdrawing the auger.

The shaft G has a threaded portion at least as long as the depth of any hole to be bored by the machine, though it is not essential to the operation of the maf chine that the hole should be bored tothe full depth for which provision is made. At the lower end of the tated.

shaft is a point, H, and somewhat above the latter is a flanged foot or lip, H', of the usual kind. Onthe summit of the shaft is a wheel, I., bywhioh it is ro- The operation is as follows: l

The machine being set over the place where the hole is to be bored, the shaft G is rotated by the wheel I, driving the anger into the soil until the wheel I comes in contact with the wheel F, or until the required de th is reached, short of that limit. During this time, t e wheel F is restrained from rotating, by the hand, or by a stop, as'may be convenient.

The vwheel F is then rotated in the same direction as the former one, while the wheeLI and the shaft are restrained from rotating, and thev result is, that the shaft rises vertically as its thread is' traversed by the nut, withdrawing the auger fand its load of soil from the hole. The soil is then discharged, and the machine moved over the place where the next hole is to be bored.

Having described my invention,

What I claim as new, and desire to secure by Letters Patent, is'

rIhe arrangement of the screw-shaft G, with its wheel I, vand the nut D, with its wheel F, and restraining plates E, operating respectively for the rotation and insertion of the auger, and for its upward withdrawal, substantially as desclibed and represented.

To the above specification of my improved post-hole auger, I have signed my hand, this 19th day of August, 1868.

JOHN. B. DRAPAR.

Witnesses:

J. O. Crimson, I. N. MOORE. 

